I'm so out of it musically, I don't even recognize many of those names. I pretty much listen to NPR in the car and classical music (esp guitar) when I'm at my desk at home. An iPod would be TOTALLY wasted on me.
Janis Joplin of course I recognize-- I even saw her in person in 1968. My bf at the time thought I needed to broaden my musical horizons. It didn't work. He also gave me a Jimi Hendrix album that I still have, and that I have NEVER listened to all the way through.
I guess the question is, do YOU see any patterns? Are there recurring themes in the songs these people sing? I think different genres of music have different overall themes-- blues, metal, rap, country. Are these women "men are no damm good" singers? Or "who needs him?" or "someday my prince will come"?